power: reset: at91-reset: use r4 as tmp argument (7cb290d3) · Commits · 戴 / test

Use r4 as temporary register. On ARM r0-r3 should be used to hold function arguments. Signed-off-by:

drivers/power/reset/at91-reset.c

+3 −3

Original line number	Diff line number	Diff line
		@@ -113,8 +113,8 @@ static int at91sam9g45_restart(struct notifier_block *this, unsigned long mode,
		"beq 1f\n\t"

		/* Then, test that the RAM controller is enabled */
		"ldr r0, [%1]\n\t"
		"cmp r0, #0\n\t"
		"ldr r4, [%1]\n\t"
		"cmp r4, #0\n\t"

		/* Align to cache lines */
		".balign 32\n\t"
		@@ -138,7 +138,7 @@ static int at91sam9g45_restart(struct notifier_block *this, unsigned long mode,
		"r" (1),
		"r" cpu_to_le32(AT91_DDRSDRC_LPCB_POWER_DOWN),
		"r" (reset->args)
		: "r0");
		: "r4");

		return NOTIFY_DONE;
		}